“The voice of one crying in the wilderness: ‘Prepare the way of the Lord; Make His paths straight.’”
On the new moon (the start of the month, which is when the Feast of Trumpets falls on), every month, at the start of the month, the door of the temple is to be opened.
Halloween has many similarities to the Biblical Feast of Trumpets, which, today, is called Rosh Hashanna, and is practiced by the Ashkenazi Jews
I believe this festival was practiced, in some related form, by the Ten Lost tribes of Israel who were exiled 720 years before Christ.
